Using UUID and timeuuid types

The UUID (universally unique id) comparator type is used to avoid collisions in column
names. Alternatively, use the timeuuid.

Timeuuid types can be entered as integers for CQL input. A value of the timeuuid type is a
Type 1 UUID. A Version 1 UUID includes the time of its generation and are
sorted by timestamp, making them ideal for use in applications requiring conflict-free
timestamps. For example, you can use this type to identify a column (such as a blog entry)
by its timestamp and allow multiple clients to write to the same partition key
simultaneously. Collisions that would potentially overwrite data that was not intended to be
overwritten cannot occur.

A valid timeuuid conforms to the timeuuid format shown in valid
literals.